摘要：混凝土装载机进行成品料卸料前的出料口位置视觉校准是进行混凝土装载的重要的一步，目的是通过计算机视觉系统，保证处于空间位置的出料口中心和处于固定位置的运输车装料口中心重合。研究出一种采用人机交互的方法，实验结果证明该方法可实现装/卸料口的准确定位，缩短了图像处理的时间，提高了混凝土卸料的速度。
关键字：计算机视觉，图像处理，自动对接，椭圆拟合

Before unloading of cement, a key step is the position calibration of the comment loading and camion. Its target is to eliminate the position errors between the center of the comment loading head and the center of the vision area so as to unload accurately. This paper presents a novel approach, using man-computer interaction to realize the position calibration. It can save time and improve speed.
Keywords：computer vision, image processing, automatic dock, ellipse fitting